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Finding the Fourth Proportional to 58.35, 87.00 and 57.32

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Solution

The fourth proportional to 58.35, 87.00 and 57.32 is: 85.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.35 : 87.00 = 57.32 : x
  2. Step 2: Convert to fraction form
    58.35/87.00 = 57.32/x
  3. Step 3: Cross multiply
    58.35x = 87.00 × 57.32
  4. Step 4: Simplify right side
    58.35x = 4,987.33
  5. Step 5: Solve for x
    x = 4,987.33/58.35
  6. Step 6: Final answer
    x = 85.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.